document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=327308>Question 327308</A>: <I><SPAN STYLE=\"word-break: break-all;\">   <BR>\n" );
document.write( "Could I please have some help with this problem. I am really back at this when it comes to square roots. Thank you\r<BR>\n" );
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document.write( "(3- 2square root7)(3+ 2square root 7) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #234431 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=234431\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (3- 2square root7)(3+ 2square root 7)<BR>\n" );
document.write( "This is similar to (a - b)*(a + b) = a^2 - b^2<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%283-+2sqrt%287%29%29%283%2B+2sqrt%287%29%29 ALIGN=MIDDLE  ALT=\"%283-+2sqrt%287%29%29%283%2B+2sqrt%287%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3%5E2+-+%282sqrt%287%29%29%5E2 ALIGN=MIDDLE  ALT=\"3%5E2+-+%282sqrt%287%29%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "= 9 - 4*7<BR>\n" );
document.write( "= -19\r<BR>\n" );
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document.write( " </SPAN>\n" );
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